﻿<!DOCTYPE html>
<html>
<head>
	<script src="//code.jquery.com/jquery-3.7.1.js" type="text/javascript"></script>
	<script src="../../jsrender.js" type="text/javascript"></script>
	<link href="../resources/demos.css" rel="stylesheet" type="text/css" />

	<link href="../resources/movielist.css" rel="stylesheet" type="text/css" />
</head>
<body>
<a href="../demos.html">JsRender Demos</a><br />

<h3>Example Scenario: Inserting "and" and "," separators between words</h3>

<!---------------------- First Example ---------------------->

<div class="subhead">Example 1: Expressions in tags, and template parameters ({{if}} tag):</div>

<pre>
    {{for languages ~count=languages.length}}
        ...
        {{if #index === ~count-2}} and {{else #index < ~count-2}}, {{/if}}
        ...
    {{/for}}
</pre>

<script id="movieTemplate1" type="text/x-jsrender">
	<tr>
		<td>{{>title}}</td>
		<td>
			{{for languages ~count=languages.length}}
				{{>name}}{{if #index === ~count-2}} and {{else #index < ~count-2}}, {{/if}}
			{{/for}}
		</td>
	</tr>
</script>

<table>
	<thead><tr><th>Title</th><th>Languages</th></tr></thead>
	<tbody id="movieList1"></tbody>
</table>

<!---------------------- Second Example ---------------------->

<div class="subhead">Example 2: Expressions in tags, and template parameters (ternary expression):</div>

<pre>
    {{for languages ~count=languages.length}}
        ...
        {{: #index === ~count-2 ? " and " : #index < ~count-2 ? ", " : ""}}
        ...
    {{/for}}
</pre>

<script id="movieTemplate2" type="text/x-jsrender">
	<tr>
		<td>{{>title}}</td>
		<td>
    {{for languages ~count=languages.length}}
				{{>name}}{{: #index === ~count-2 ? " and " : #index < ~count-2 ? ", " : ""}}
			{{/for}}
		</td>
	</tr>
</script>

<table>
	<thead><tr><th>Title</th><th>Languages</th></tr></thead>
	<tbody id="movieList2"></tbody>
</table>
<br />

<!---------------------- Third Example ---------------------->

<div class="subhead">Example 3: Custom helper functions:</div>

<pre>
    {{for languages}}
        ...
        {{if ~nextToLast()}} and {{else ~notLast()}}, {{/if}}
        ...
    {{/for}}
</pre>

<script id="movieTemplate3" type="text/x-jsrender">
	<tr>
		<td>{{>title}}</td>
		<td>
			{{for languages}}
				{{>name}}{{if ~nextToLast()}} and {{else ~notLast()}}, {{/if}}
			{{/for}}
		</td>
	</tr>
</script>

<table>
	<thead><tr><th>Title</th><th>Languages</th></tr></thead>
	<tbody id="movieList3"></tbody>
</table>
<br />

<!---------------------- Fourth Example ---------------------->

<h3>Using "allowCode"</h3>

<div class="box label">
<b>Note:</b> The allowCode feature is powerful, but leads to poor separation of concerns, and poor maintainability.
<br />It is therefore only available as an opt-in feature on a per template basis.
<br /><br />The following two examples illustrate its use, but are not the recommended approach. The built-in expression support,
<br />custom tags, helper functions etc. provide a better solution for almost all scenarios, as in the two examples above.</div>

<div class="subhead">Example 4: allowCode, for program flow - with if(...) { ... }:</div>

<pre>
$.templates( "movieTmpl", {
    markup: "#movieTemplate",
    allowCode: true
});

{{*
    if ( myexpression ) {
}}
    ...
{{*
    }
}}
</pre>

<script id="movieTemplate4" type="text/x-jsrender">
	<tr>
		<td>{{>title}}</td>
		<td>
			{{for languages}}
				{{>name}}{{*

					if ( view.index === view.parent.data.length-2 ) {

				}} and {{*

					} else if ( view.index < view.parent.data.length-2 ) {

				}}, {{* } }}
			{{/for}}
		</td>
	</tr>
</script>

<table>
	<thead><tr><th>Title</th><th>Languages</th></tr></thead>
	<tbody id="movieList4"></tbody>
</table>

<!---------------------- Fifth Example ---------------------->

<div class="subhead">Example 5: allowCode, for returning content - with ternary expression:</div>

<pre>
$.templates( "movieTmpl", {
    markup: "#movieTemplate",
    allowCode: true
});

{{*: myexpression ? ... : ...}}
</pre>

<script id="movieTemplate5" type="text/x-jsrender">
	<tr>
		<td>{{>title}}</td>
		<td>
			{{for languages}}
				{{>name}}
				{{*: view.index === view.parent.data.length-2 ? " and " : view.index < view.parent.data.length-2 ? ", " : ""}}
			{{/for}}
		</td>
	</tr>
</script>

<table>
	<thead><tr><th>Title</th><th>Languages</th></tr></thead>
	<tbody id="movieList5"></tbody>
</table>


<script type="text/javascript">

	$.views.helpers({

		nextToLast: function() {
			return this.index === this.parent.data.length-2;
		},

		notLast: function() {
			return this.index !== this.parent.data.length-1;
		}
	});

	var movies = [
		{
			title: "Meet Joe Black",
			languages: [
				{ name: "English" },
				{ name: "French" }
			],
			subtitles: [
				{ name: "English" },
				{ name: "French" },
				{ name: "Chinese" }
			]
		},
		{
			title: "Eyes Wide Shut",
			languages: [
				{ name: "French" },
				{ name: "German" },
				{ name: "Spanish" }
			],
			subtitles: [
				{ name: "English" }
			]
		}
	];

	$.templates({
		movieTmpl1: "#movieTemplate1",
		movieTmpl2: "#movieTemplate2",
		movieTmpl3: "#movieTemplate3",
		movieTmpl4: {
			markup: "#movieTemplate3",
			allowCode: true,
			useViews: true // Since the {{* ... }} code inserted uses views (view.parent...) we make sure the default optimization of not using views when not necessary
		},
		movieTmpl5: {
			markup: "#movieTemplate4",
			allowCode: true,
			useViews: true
		}
	});

	// Note that by default, rendering simple templates does not create a view hierarchy - which allows for optimized performance.
	// For the movieList3 and movieList4 we are inserting code that does depend on the view hierarchy (e.g. view.parent... ) so for
	// those templates we have set useViews: true. We could alternatively use $.views.settings.useViews = true, as a global setting...

	$( "#movieList1" ).html(
		$.render.movieTmpl1( movies )
	);

	$( "#movieList2" ).html(
		$.render.movieTmpl2( movies )
	);

	$( "#movieList3" ).html(
		$.render.movieTmpl3( movies )
	);

	$( "#movieList4" ).html(
		$.render.movieTmpl4( movies )
	);

	$( "#movieList5" ).html(
		$.render.movieTmpl4( movies )
	);

</script>

</body>
</html>
